Coils of Birch bark - likely originating from North America and has ridden a combination of winds and currents to cross the Atlantic.
County Clare, Ireland.
Cormacscoast.com walking tours
There are thousands of scrolls of birch bark lodged in the soil in Novgorod, and they demonstrate a surprising level of popular literacy in the medieval period.
One of the scrolls (any word you use will be too fancy for the real thing, which is literally just a scrap of bark) is the earliest written text in a Balto-Finnic language (cool) and contains a spell or incantation of some kind (very cool).
I've been fascinated with birch bark letter #292 for a long time, so it was an obvious choice for a 'vaguely Finnish, weirdly specific' video.
Take a moment to enjoy my enthusiastic gesticulating about transliteration and back pain - and if you are particularly diverted, do give it a boost.